Water-heater.



Patented Dec. 23, I902.

J. HABTMAN.

WATER HEATER.

(Application filed July 2, 1802.)

(No Model.)

"r1: NOQFHS Paw-4s co, wmouwo. w sHmc-YoN, o. c,

UNirnn STATES- PATENT OFFICE.

JACOB HARTMAN, OF CLEVELAND, OHIO, ASSIGNOR OF ONE-HALF TO'ELIAS M. ROTHMAN, OF DETROIT, MICHIGAN.

WATER-HEA-TER.

SPECIFICATION forming part of Letters Patent N 0. 716,414, dated December 23, 1902.

Application filed July 2. 1902.

To all whom, it may concern.-

Be it known that I, JAooB HARTMAN, a citizen of the United States, residing at Cleveland, countyof Ouyahoga, State of Ohio, have invented a certain new and useful Improvement in \NatenHeaters; and I declare the following to be a full, clear, and exact 'description of theinvention, such as will enable others skilled in the art to which itpertains to to make and use the same, reference being bad to the accompanying drawings, which form a part of this specification.

My invention relates to improvements in water-heaters,and is shown in the accompanying drawings, in which- Figure 1 is a vertical sectional view of the heater, and Fig. 2 is a plan view of the valve mechanism.

In the drawings, A represents the outer case or jacket, and B the pan forming the lower portion of the case.

O C represent the burner, which consists of the usual annular portion and the central portion, the construction being such as to distribute the burning gases throughout the lower end of the heater.

D represents an inner jacket, which I make of spun copper and all in one piece.

d d represent ledges formed in the wall of the jacket D, the jacket being enlarged from the top downward to the extent of these ledges. The lower end of the jacket D is made flaring and a flange d turned out on it, by means of which it is engaged with the outer case A and the pan B by riveting the flange d between a flange a on the case A and a flange b on the pan B. This connec tion between the flanges is made water-tight, so that the space above the flange and be- 0 tween the inner and outer jackets becomes a water-space. E represents the dischargepipe from this water-space.

Inside of the inner jacket I provide a double coil, consisting of the outer coil F, which is connected at the lower end with the waterinlet valve G and extends upward, conforming to the inner wall of the inner jacket and connecting at the upper end with a returncoil II. This last-named coilleads downward again to a pointimmediately over the burner, where it connects with a center stand-pipe J. This stand-pipe is provided at the upper Serial No 114,045. (No model.)

end with a funnel j, covered by a hood j. The hood and funnel are connected by water passages or tubes j 3' by which the water that overflows from the funnel is directed inward against the outside of the inner jacket D. Thus the course of the water entering the heater is upward through the outer coil to the top of the heater, thence downward through the inner coil,thence upward through the stand-pipe, where it overflows and runs down the outer side of the inner jacket in a thin sheet. By this construction it is noted that the inner coil leads the water after it has been partially heated in the outer coil down ward toward the burning gas, thus causing it to approach hotter products of combustion as it becomes more heated. The water is also subjected to hot gases, that naturally 7a travel up the center of the heater, asit passes through the stand -pipe. This stand-pipe can be, if desired, divided into a number of small pipes to increase the heating-surface on its return upward. The water-pipes j 3' surround the upper end of the inner jacket D, so that the hot gases in passing out into the outer jacket must pass around these pipes, and the pipes thereforebecome heating agents.

The valve mechanism shown consists of the usual gas-valve K and the water-valve G, connected together by means of the gear-segments 7c and g, so that when the gas-valve is open to admit gas to the burner the watervalve is opened with it and in proportion to the amount of gas burned. To provide for adjusting the relation between the water and gas valves, I provide the water-valve with an independent adjustment operated by the 0 hand-wheel g.

10 represents the handle with which the two valves are operated in the usual operation of the burner.

What I claim is-- 5 1. In a water-heater, the combination of the burner, the coil leading upward from the water-inlet, a second coil leading downward from this coil toward the burner, a returnpipe from the second coil leading upward within the coils before mentioned and provided at the top with an overflow adapted to deliver the water upon the jacket surrounding the coils and a jacket of sheet metal adapt- ICC ed to receive the water from the overflow upon its outer surface, substantially as described.

2. In a water-heater, the combination of the burner, the double coil, the stand-pipe located within the coil provided with an overflow at the top, the heater-jacket of sheet metal adapted to receive the water on its outer surface from the overflow at the top of the standpipe and a hood provided with dischargepipes arranged to deliver the water on the discharge-pipes leading from .the funnel tothe outer surface of the burner-jacket, substantially as described.

4:. In a water-heater, the combination of the burner, the double coil arranged to return the water downward toward the burner, the stand-pipe located within the coils and provided with a funnel at its upper end, the heater-jacket formed of one piece and provided with horizontal annular ledges formed therein and discharge-pipes leading from the funnel to the outer surface of the jacket, substantially as described.

In testimony whereof I sign this specification in the presence of two witnesses. v

JACOB HARTMAN.

Witnesses:

HENRY SPIRO, ELIAs M. ROTHMAN. 

